Time on Mars
<BODY> <h1 align="center"><font face="Arial" color="#000080">Martian Time</font></h1> <P align=center> <P align=center><FONT face=Arial color=#000080 size=2><B>Earth Date: <SCRIPT language=Javascript type=Text/Javascript> <!-- Hide script from old browsers <!-- Martian Time version 2 by Matt Oltersdorf created Earth Day 2000 09 03 13:32 UTC. (Changed to AD as starting point by wkv.) //------------------------------------------------------------------- //get current date from system and put in now variable now = new Date thisYr = now.getUTCFullYear() nextYr = thisYr + 1 endofyear = new Date(thisYr, 11, 31) if (endofyear.getTime() < now.getTime()) { endofyear.setYear(nextYr) } doy = (366 - daysTill(endofyear)) //------------------------------------------------------------------- //returns day of Earth year. function dayToDays(inTime) { return (Math.floor(inTime.getTime() / (1000 * 60 * 60 * 24))) } function daysTill(inDate) { return dayToDays(inDate) - dayToDays(now) } //------------------------------------------------------------------- //returns the integer of a number. function intr(num) { with (Math) { num = floor(num) } return num } //------------------------------------------------------------------- //rounds a number by specified decimals. function rnd(num,num2) { with (Math) { num = round(num*pow(10,num2)) / pow(10,num2) } return num } //------------------------------------------------------------------- //fills in the leading minutes space with a zero if minutes less than 10 function showZeroFilled(inValue) { if (inValue > 9) { return ":" + inValue } return ":0" + inValue } //------------------------------------------------------------------- //fills in the leading hour space with a zero if martian hour less than 10 function showZeroHour(inValue) { if (inValue > 9) { return inValue } return "0" + inValue } //------------------------------------------------------------------- //fills in the leading month space with a zero if month is less than 10 function showZeroMonth(inValue) { if (inValue > 9) { return inValue } return "0" + inValue } //------------------------------------------------------------------- //fills in the leading days space with a zero if day is less than 10 function showZeroDay(inValue) { if (inValue > 9) { return inValue } return "0" + inValue } //------------------------------------------------------------------- //fills in the leading days space with a zero if day is less than 10 function showZeroYear(inValue) { if (inValue > 99) { return inValue } return "00" + inValue } //------------------------------------------------------------------- //assign names dayName = new Array ("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday") monthName = new Array ("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December") monthnumberName = new Array ("1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12") //------------------------------------------------------------------- //calculate decimal format for Anno Domini daydecimal = doy/365.25 hourdecimal = (now.getUTCHours())/8742 minutesdecimal = (now.getUTCMinutes())/524520 secondsdecimal = (now.getUTCSeconds())/31471200 yeardecimal = (now.getUTCFullYear()) + daydecimal + hourdecimal + minutesdecimal + secondsdecimal elapsedseconds = intr(now.getTime() / 1000) + (60*60*24*365.256*9) elapsedyears = intr(elapsedseconds/(60*60*24*365.256)) elapseddays = (elapsedseconds - (elapsedseconds/(60*60*24*365.256)))/86400 days = intr(elapseddays-(intr(365.256*elapsedyears))) //------------------------------------------------------------------- //write Anno Domini to screen in various formats document.write("<center>It is " + dayName[now.getDay()] + ", " + monthName[now.getMonth()] + " " + showZeroDay(now.getDate()) + ", " + now.getUTCFullYear() + " " + "Anno Domini" + "<br>") document.write(now.getUTCFullYear() + " " + showZeroMonth(monthnumberName[now.getUTCMonth()]) + " " + showZeroDay(now.getUTCDate()) + " " + showZeroHour(now.getUTCHours()) + showZeroFilled(now.getUTCMinutes()) + showZeroFilled(now.getUTCSeconds()) + " " + "EUTC (Earth Universal Time Coordinated)" + "<br>") document.write(rnd(yeardecimal,9) + " (decimal format)" + "<br>") document.write("Day " + doy + " of year; " + daysTill(endofyear) + " days till end of year" + "<br>" + "") //End hiding script from old browsers --> </SCRIPT> <ALIGN="CENTER"></b></FONT> <P align=center> <P align=center><B><FONT face=Arial color=#ff0000 size=2>Martian Date:<BR></FONT><FONT face=Arial color=#ff0000 size=2>(Time starting with the birth of Christ)</FONT><FONT face=Arial color=#000080 size=2><FONT face=Arial color=#ff0000 size=2><BR> <SCRIPT language=Javascript type=Text/Javascript> <!-- Hide script from old browsers <!-- Martian Time version 2 by Matt Oltersdorf created Earth Day 2000 09 03 13:32 UTC //declare variables and assign values var b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12, b13 //b1=Mars date in decimal format //b2=decimal fraction of Mars date //b3=decimal fraction of Mars date converted to days //b4=# of days in martian month //b5=elapsed days to current months end //b6=difference between elapsed # of days and calculated days //b7=martian month number assigned //b8= //------------------------------------------------------------------- //Calculate Martian Date b1 = Martian Date in decimal format, b2 - strips the interger, b3 - converts to Martian b1 = 0 + (8/15 * (yeardecimal - 0)) b2 = b1 - intr(b1) b3 = b2 * 669 //------------------------------------------------------------------- //returns the Martian Month name function showMartianMonth() { if (b3 >0 && b3 < 62) { return ("Gemini") } else if (b3 > 61 && b3 < 127) { return ("Cancer") } else if (b3 > 126 && b3 < 193) { return ("Leo") } else if (b3 > 192 && b3 < 258) { return ("Virgo") } else if (b3 > 257 && b3 < 318) { return ("Libra") } else if (b3 > 317 && b3 < 372) { return ("Scorpius") } else if (b3 > 371 && b3 < 422) { return ("Sagittarius") } else if (b3 > 421 && b3 < 469) { return ("Capricorn") } else if (b3 > 468 && b3 < 515) { return ("Aquarius") } else if (b3 > 514 && b3 < 563) { return ("Pisces") } else if (b3 > 562 && b3 < 614) { return ("Aries") } else { return ("Taurus") } } //------------------------------------------------------------------- //------------------------------------------------------------------- //returns the number of Martian days in a month and the days elapsed if (b3 >0 && b3 < 62) { b4 = 61, b5 = 61, b7 = 1 } else if (b3 > 61 && b3 < 127) { b4 = 65, b5 = 126, b7 = 2 } else if (b3 > 126 && b3 < 193) { b4 = 66, b5 = 192, b7 = 3 } else if (b3 > 192 && b3 < 258) { b4 = 65, b5 = 257, b7 = 4 } else if (b3 > 257 && b3 < 318) { b4 = 60, b5 = 317, b7 = 5 } else if (b3 > 317 && b3 < 372) { b4 = 54, b5 = 371, b7 = 6 } else if (b3 > 371 && b3 < 422) { b4 = 50, b5 = 421, b7 = 7 } else if (b3 > 421 && b3 < 469) { b4 = 47, b5 = 468, b7 = 8 } else if (b3 > 468 && b3 < 515) { b4 = 46, b5 = 514, b7 = 9 } else if (b3 > 514 && b3 < 563) { b4 = 48, b5 = 562, b7 = 10 } else if (b3 > 562 && b3 < 614) { b4 = 51, b5 = 613, b7 = 11 } else { b4 = 56, b5 = 669, b7 = 12 } //------------------------------------------------------------------- //calculate days till end of Martian year b6 = b5 - intr(b3) b8 = b4 - b6 b9 = 669 - intr(b3) //------------------------------------------------------------------- //Calculate Martian time UTC t5 = now.getUTCSeconds() t6 = t5 / 1.0275 t3 = now.getUTCMinutes() t4 = t3 / 1.0275 t1 = now.getUTCHours() t2 = t1 / 1.0275 //------------------------------------------------------------------- document.write("It is " + showMartianMonth() + " " + showZeroDay(b8) + ", " + showZeroYear(rnd(b1,0)) + " " + "Mars Date" + "<br>") document.write(showZeroYear(rnd(b1,0)) + " " + showZeroMonth(b7) + " " + showZeroDay(b8) + " " + showZeroHour(intr(t2)) + showZeroFilled(intr(t4)) + showZeroFilled(intr(t6)) + " MUTC " + "(Mars Universal Time Coordinated)" + "<br>") document.write(showZeroYear(rnd(b1,9)) + " (decimal format)" + "<br>") document.write("Day " + intr(b3) + " of Martian year; " + b9 + " days till end of Martian year" + "<br>") //End hiding script from old browsers --> </SCRIPT> </FONT></FONT> <DIV align=center> <CENTER> <P> </CENTER></DIV> </BODY> </body> </html></b><font face="Arial" color="#000080" size="2"><b> <hr width="30%" color="#808080"> <align="center" /></b></font> <p align="center"> </p> <p align="center"> </p>
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