For that we need to know how much BTC came in between 22 Feb 2016 05:52 UTC and 23 Feb 2016 05:51 UTC.
Let's assume 200BTC, then your first day bonus would be YOUR CONTRIBUTION * 200000 / 200
So if 200BTC total came in, and you contributed 1BTC, you would get 1000 LISK.
Correction, but the first day bonus is 1,000,000 Lisks for which Dev added an extra 200,000 to it making the total 1,200,000 and as far as I am concerned there were 790 BTC's invested on the first day, so 1,200,000 / 790 = 1518.987341772152 per BTC invested.
the 790 BTC figure might not be entirely correct, I remember seeing 790 BTC when the 1st day was over, and then someone else mentioning 801 BTC a few days later making 801 BTC the worst case scenario which would be 1,200,000 Lisks / 801 BTC = 1,498.12734082397 Lisks per 1 BTC ɪ̶̷̲̅ɴ̶̷̲̅ᴠ̶̷̲̅ᴇ̶̷̲̅s̶̷̲̅ᴛ̶̷̲̅ᴇ̶̷̲̅ᴅ̶̷̲̅ donated
The first day bonus is 200,000 LISK.
The 200,000 LISK is a share of the total of 1,200,000 LISK set aside for the "Bounty Campaign".
First day bonus - 200,000 LISK
Newsletter Subscribers — 200,000 LISK
Facebook Likes — 100,000 LISK
Twitter Followers — 200,000 LISK
Signature Campaign — 200,000 LISK
Translations — 300,000 LISK