Conversion date different from posting date?
Took my Citi Prestige to southern Africa.
1. 1800 BWP on 16 December 17 (weekend, but says it posted on the 16th). Prestige $179.57. Mastercard site has $175.70 on 15, 16, and 17, $179.11 on 18, and $179.57 on 19. So I guess the conversion happened on the 19th despite both columns in my bill showing the 16th?! On oanda.com it's $171.869 for the 16th and $173.703 for the 19th. That's a 3.37% hidden fee.
2. 11890.58 ZAR on 13 December 17. Prestige $882.65, matching the Mastercard site for 13 December. On oanda.com it's $871.04 for that day. That's a 1.33% hidden fee.
3. 105 ZMB on 14 December 17. Prestige $10.72, matching the Mastercard site. On oanda.com it's $10.47. That's a 2.38% hidden fee.