Enter a date and find out the moon phase!

• If the date is left empty it defaults to the current date;
• single digits are fine, and adding a zero is fine too (2 and 02 are both valid formats);
• entering 0 as year will be treated as 2000;
• entering less than four digits as year will default to the 1900s (78 will be treated as 1978);
• to get the year 78 enter 0078;
• enjoy!