April Fools' Day

Today was April Fools' Day , the first day of the April (April is a proper noun, so no need to use the as there is only one April). It was a fine day . Maybe many people was were (should use were for plural) fooled by friends or colleagues. And (No need to use And in the beginning of the sentence) it is was Sunday , but I still have had to work , it is a pity .(the rest of the text is in past tense - "Today was April Fools' Day",  "It was a fine day". This implies that the comment was made at the end of the day thinking about the day that already past. So, the last sentence should also be in past tense. )